{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 IEC frame 160, switch disconnector in MCCB design, 3-pole SD100, In=125 A, front terminal connection, undervoltage release 208-230 V AC 50/60 Hz, 2 auxiliary switches HQ.","salesMarkdown":"The Siemens 3VA1112-1AA36-0DC0 is a SENTRON 3VA1 series switch disconnector built in an MCCB (moulded-case circuit breaker) form factor — meaning it occupies the same panel footprint and DIN-rail mounting as a breaker but provides no overcurrent or short-circuit protection. Its job is load-break isolation: rated continuous current Iu of 125 A through three poles, with a maximum operational voltage of 690 V AC 50/60 Hz or 500 V DC. This is a pure disconnect — no trip unit, no overload or short-circuit release. The 2 kA short-time withstand rating (1 s and 0.5 s) means it can hold closed under a fault current long enough for an upstream protective device to clear, but it relies entirely on that upstream breaker or fuse for fault interruption. The 125 A continuous rating (Iu) governs the main conductor sizing and buswork — this is the current it can carry indefinitely without exceeding its 70 °C maximum operating ambient. Front terminal connections accept lug or clamp terminations on the main circuit. The IP40 front protection means tools or fingers won't reach live parts from the front of the panel, but the switch itself is not sealed — it expects a clean, dry enclosure environment. The integrated undervoltage release (UVR) is factory-set for 208-230 V AC 50/60 Hz. Two HQ auxiliary switches (form C, 2 CO contacts) report the main contact position back to the PLC or status panel. Mechanical endurance is 15,000 operations, which is typical for a disconnect in this class: adequate for daily isolation in a production line, not for high-cycle motor starting. The product designation under DIN EN 81346-2 is Q (switch disconnector), which aligns with its function as a load-break isolating device in power distribution schematics. Dimensions are 130 mm height, 76.2 mm width (3-pole), and 70 mm depth — this is the standard 3VA1 frame 160 footprint. Front-terminal arrangement means all power and control wiring lands on the face of the device, so allow clearance for lug wrenches and auxiliary-wire routing. The optional motor-drive extension (listed as available) can be fitted for remote switching without adding panel depth.","metaTitle":"Siemens 3VA1112-1AA36-0DC0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens 3VA1112-1AA36-0DC0 SENTRON MCCB-design switch disconnector, 125 A rated continuous current, 3-pole, 690 V AC / 500 V DC, with undervoltage release 208-230 V AC. Current pro","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Limited To 1 S":"2 kA","Trip indicator":"No","Number of poles":"3","Product version":"in MCCB design","Voltage trigger":"No","lifecycle_stage":"current","Limited To 0.5 S":"2 kA","Product brand name":"SENTRON","Product designation":"Switch disconnector","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"38 W","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Number of CO contacts / for auxiliary contacts":"2","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Terminal connection","Arrangement of electrical connectors / for main current circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=55532&mlfb=3VA1112-1AA36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-1AA36-0DC0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the depth of 3VA1112-1AA36-0DC0?","answer":"The depth is 70 mm, with a width of 76.2 mm and height of 130 mm."},{"question":"What compliance documentation does Siemens provide for this switch disconnector?","answer":"The product carries the SENTRON brand and is designed to IEC standards (DIN EN 81346-2 reference code Q). For specific RoHS, REACH, or UL documentation, request the manufacturer's declaration of conformity with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0DC0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1112-1AA36-0DC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}